package com.zhang.spark_1.spark_core.operator.transform

import org.apache.spark.rdd.RDD
import org.apache.spark.{SparkConf, SparkContext}

/**
 * @title:
 * @author: zhang
 * @date: 2021/12/5 18:51 
 */
object Spark01_RDD_Operator_Transform_Par {

  def main(args: Array[String]): Unit = {
    //获取spark的连接
    val conf: SparkConf = new SparkConf().setMaster("local[*]").setAppName("operator")
    val sc: SparkContext = new SparkContext(conf)
    //TODO map算子

    val rdd: RDD[Int] = sc.makeRDD(List(1, 2, 3, 4),4)

    val rddMap1: RDD[Int] = rdd.map(
      num=>{
        println(">>>>>>>"+num)
        num
      }
    )
    val rddMap: RDD[Int] = rddMap1.map(
      num => {
        println("++++++" + num)
        num
      }
    )

    rddMap.collect()
    sc.stop()
  }
}
